When I put in gambling losses it doesn't reflect in the amount I get in return

[AlanT]

Unfortunately, if you do not Itemize your deductions, the gambling losses will not have an effect on your taxes.  

We estimate that close to 90% of taxpayers will be taking the higher standard deduction this year (compared to around 70% last year) as a direct result of tax reform legislation.

Check your return to see if you itemize or take the standard deduction.  Keep in mind the Standard deduction for single taxpayers is $12,000.  The standard deduction for married taxpayers is $24,000.